Table 2 Comparison between the 2 groups as regards laryngoscopic and pH-metry data using Mann-Whitney’s U and chi-square tests

Variable

Control group (25)

LPR group (25)

Mann-Whitney’s U test

Median (IQR)

Median (IQR)

P value

% Time pH < 4 (total) (%)

12 (10–13)

26 (16–67.5)

< 0.0001**

Variable

Control group (25)

LPR group (25)

Chi square test

P value

Laryngoscope abnormality

+ve

0 (0%)

4 (16%)

= 0.039*